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(Model.)

J. H. NORTHROP:

KNOT TYING APPARATUS PoR SPOOLING MACHINES, am. No. 325,624. Patented Sept. 1, 1885.

W ESSEE. VE ha?.

, 'Nrrnn STATES PATENT JAMES H. NORTHROP, OFV HOPEDALE, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO GEORGE D12-AFER & SON, OF SAME PLACE.

KNT-TYING APPARATUS FOR SPOOLlNG-MACHINES, 84C.

SPECIFICATION forming part of. Letters Patent No. 325,624. dated September 1, 1885. v v

Appncanonnlen November 5. nies. (Model.)

To all whom it may concern:

Beit known that I, J AMnsH. Nonrnnor, of Hopedale, county of Worcester, State of Massachusetts, have invented an Improvement in Knot-Tying Apparatus for Spooling- Machines, dre., of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing likel parts.

This invention has for its object the produc tion of a novel knot-tying apparatus adapted to tie knots in yarn or thread, twine, dto., and cut the same off near the knot, the said apparatus being, among other uses, adapted to tie ends in spooling-rnachines, or to tie the cords or strings in reaping and binding machines.

In this invention a case or sleeve, forked at its free end, cut through at one side, and provided internally with a serew-thread, receives in it a screw-threaded spindle, which has attached to it at one end a blade composed of two spring-arms, and the shank of the spindle is extended loosely through and has splined to it a pinion, rotation of which, by toothed gearing outside the sleeve, effects the rotation of the spindle and attached blade to tie a knot in the yarns or threads held between the spring members of the blade, the said yarns or threads to be tied being held each side the path of rotation of the forked part of the blade, the latter co-operating with a part of the sleeve to sever or cutoff the yarn or thread close to the knot.

My invention consists, essentially, in a case or sleeve slotted at its end to receive the threads to be acted upon, and provided with a screwthread and ascrew-threaded spindle, a blade, and a pinion, combined with a sector to engage thge said pinion and rotate and reciprocate the spindle and blade, as will be described.

Figure 1 in side elevation represents a knottying device embodying my invention, the same being shown as adapted for use in connection with a spooling-machine. Fig. 2 is a front view of the device shown in Fig. 1. Fig. 3 is a section on the line rv w, Fig. 1, the spindle, its attached parts, and the screw to pivot the sleeve on the standard being shown in elevation. Fig. i is an inner side view of the uppcrend of the case or sleeve. Fig. '5is a bottom View of the case or sleeve and the parts within it, the said figure showing twothrcads or cords placed in the slots of the case to be tied. Fig. 6 is a detail of part of the ease or sleeve and the fork, the latter occupying the same position with relation to the threads or cords as in Fig. 5. Figs. 7 and 8 represent views similar to Figs. 5 and 6, but with the fork in a different position, a part 0f the case next the front of the blade in Fig. 7 being broken out, to better show the position of the thread or cord. Figs. 9 and l() and Figs. 11 and 12 are other views similar to Figs. 7 and 8, but showing the fork in different positions and the knot in different steps of completion. Fig. 13 represents the kind of knot which will be laid in the threads or cords.

The standard A has at its upper end a screw, A', which receives the hub c near the upper end of the case or sleeve B, the said screw forming a fulcrum for the said case or sleeve. The hub receives about it a spiral spring, a', the ends a? a3 of which are held, respectively, by the standard and case, the tendency of the spring being to hold the case normally inthe position Fig. 1. The case or sleeve is provided at its lower end with two slots, 2 3, for the reception of the yarn, thread, or cords 4 5, which are to be tied in a knot such as shown in Fig. 13.

The case is provided with a finger or pull piece, b, and with a stop, b', is cut away at two sides, as shown at bZ and b3, and is provided centrally with a screw-thread, b, to receive the screw-threaded shank c of the spindle c', provided with a pinion, c2, which is engaged by a toothed sector, o, connected at one end with the standard or support A, and at its other with the arm c4, attached to the said standard.

The lower end of the spindle has attached to it the fork D, composed of thin blades d di, shaped substantially as shown in the drawings, the end of one overlapping the other to form a crotch to receive the threads or cords between them when the knot has been almost completed, as in Fig. 10, in order that the said threads or cords drawn into the crotch or space between the blades, when brought by the further revolution of the spindle against tthe corner 8 of the ease, produced by making the slot 3, will be severed or broken oft' close to the base of the crotch between the said blades and close to the knot, so that the threads or cords held inthe-left hand of the operator,and shown i' at the left in Fig. l2, maybe drawn vfrom the y. fork, passing off the ends of the blades, forming a knot such as shown in Fig. 13, which is, however, drawn close, for the blades at the base of the crotch hold the two ends at the right of the knot while the threads are being drawn off the blades. The knot having been drawn close, further strain on the threads in the saine direction overcomes the holdingpower of the blades, and the threads with their lends tied 4,are fully detached yfrom the knot-tying device. 5

y'Ihe'fork D sattached to the spindle by the screw rh.

The movement of the case or sleeve toward the junction of the sector c' with the standj ard under the action of the spring a is arrested by the stop b striking against-,the shoulder 'h2 of the standard or support.

I claiml 1. The case or sleeve B, slotted at its end to receive the material to be tied, and provided with a screw-thread, a standard or support for the sleeve, the screw-threaded spindle and its attached blade D, and the pinion on the spindle, ,combi-ned withsa toothed segment to engage `and rotate the said pinion, and with it the spindle, substantially as described.

2. The case or sleeve B, slotted at its end at 2 3,.cut through at its side, and provided with a screw-thread and with a projection, b, and the screw-threaded spindle, itsattached forked blade, composed of" twospring platesvor portions, d d2, and the pinion c2, combined with the standard or support, the pivot-pin, and

the rack to rotate the pinion and spindle, to i operate substantially as described.

Intestimony whereof Ihave signed my name to this specification in the presence of two subscribin g witnesses.

JAMES Hu NORTHROP.

Witnesses:

F. J. DUTCHER, Wlvr. F. DRAPER. 

